/*
 * Copyright (c) 2004-2023, University of Oslo
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * Neither the name of the HISP project nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.hisp.dhis.analytics.common.params.dimension;

import static org.apache.commons.lang3.StringUtils.equalsIgnoreCase;
import static org.hisp.dhis.feedback.ErrorCode.E2035;

import java.util.Arrays;
import java.util.Map;
import lombok.AccessLevel;
import lombok.Data;
import lombok.RequiredArgsConstructor;
import org.hisp.dhis.common.IllegalQueryException;
import org.hisp.dhis.common.QueryOperator;

@Data
@RequiredArgsConstructor(access = AccessLevel.PRIVATE)
public class AnalyticsQueryOperator {

  /* special cases for which we want to use the negated operator directly rather than the negate method */
  private static final Map<QueryOperator, QueryOperator> NEGATIVE_OPERATOR_MAP =
      Map.of(
          QueryOperator.EQ, QueryOperator.NEQ,
          QueryOperator.NEQ, QueryOperator.EQ,
          QueryOperator.IEQ, QueryOperator.NIEQ,
          QueryOperator.LIKE, QueryOperator.NLIKE,
          QueryOperator.NLIKE, QueryOperator.LIKE,
          QueryOperator.ILIKE, QueryOperator.NILIKE,
          QueryOperator.NILIKE, QueryOperator.ILIKE);

  private final QueryOperator queryOperator;
  private final boolean negated;

  public AnalyticsQueryOperator negate() {
    return new AnalyticsQueryOperator(queryOperator, !negated);
  }

  public static AnalyticsQueryOperator of(QueryOperator queryOperator) {
    return new AnalyticsQueryOperator(queryOperator, false);
  }

  /**
   * Returns the operator for the given string.
   *
   * @param operator the operator string
   * @return the operator
   */
  public static AnalyticsQueryOperator ofString(String operator) {
    // If the operator starts with !, will call this method again removing the ! and then negate the
    // result.
    if (operator.startsWith("!")) {
      AnalyticsQueryOperator parsedOperator = ofStringInternal(operator.substring(1)).negate();
      /* returns from the negate map if present */
      if (NEGATIVE_OPERATOR_MAP.containsKey(parsedOperator.getQueryOperator())) {
        return AnalyticsQueryOperator.of(
            NEGATIVE_OPERATOR_MAP.get(parsedOperator.getQueryOperator()));
      }
      /* otherwise, return the negated operator */
      return parsedOperator;
    }
    return ofStringInternal(operator);
  }

  private static AnalyticsQueryOperator ofStringInternal(String operator) {
    return Arrays.stream(QueryOperator.values())
        .filter(queryOperator -> equalsIgnoreCase(queryOperator.name(), operator))
        .findFirst()
        .map(AnalyticsQueryOperator::of)
        .orElseThrow(() -> new IllegalQueryException(E2035, operator));
  }
}
